Tom will be one of two competitors who will be using this year's marathon to raise funds for BOST.

Sarah Driver, who is a volunteer with the local charity will also be competing and donations can be made at www.givey.com/sarahmdriver

Last month BOST launched a crowdfunding campaign to raise money for the Crossbones Garden project. The charity has a three-year lease from Transport for London to create a temporary open space on part of the burial ground pending redevelopment of the adjacent land on Southwark Street.

Local woodcarver Arthur de Mowbray is building a striking entrance archway called the Goose's Wing on the Union Street side of the site, and a number of volunteering events have already been held as the new garden takes shape.